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Adaptor bellow flange are used to fit a bellow to a flange having different bolt configuration. These flanges are made of cast iron and are supplied with a split ring.

These are particularly used to fit a bellow with a non-glass equipment like Glass-lined Reactor etc. These are used in FBF, VBF type PTFE bellows.

Adaptor bellow flanges are generally supplied undrilled. However, if specified, these can be supplied drilled as per “Table E”, “Table F” and “ASA150” standards.

 

Undrilled flanges Drilled to Table E
Cat.Ref. DN D D1 D2 L Cat.Ref. pcd n x dØ
 BFA1* 25 115 43 51 7  BFA1/E 82 4 x 12Ø
 BFA1.5* 40 150 58 66 7  BFA1.5/E 98 4 x 12Ø
 BFA2* 50 165 70 81 7  BFA2/E 114 4 x 16Ø
 BFA3* 80 200 101 112 7  BFA3/E 146 4 x 16Ø
 BFA4* 100 220 134 148 8  BFA4/E 178 8 x 16Ø
 BFA6* 150 285 186 196 8  BFA6/E 235 8 x 16Ø
 BFA9* 225 395 260 282 8  BFA9/E 324 12 x 19Ø
 BFA12 300 445 342 363 10  BFA12/E 406 12 x 19Ø

 

Drilled to Table F Drilled to ASA 150
Cat.Ref. pcd n x dØ Cat.Ref. pcd n x dØ
 BFA1/F 87 4 x 16Ø BFA1/A 79 4 x 16Ø
 BFA1.5/F 105 4 x 16Ø BFA1.5/A 98 4 x 16Ø
 BFA2/F 127 4 x 16Ø BFA2/A 121 4 x 19Ø
 BFA3/F 165 8 x 16Ø BFA3/A 165 8 x 16Ø
 BFA4/F 190 8 x 16Ø BFA4/A 190 8 x 16Ø
 BFA6/F 260 12 x 19Ø BFA6/A 241 8 x 19Ø
 BFA9/F 356 12 x 23Ø BFA9/A 298 8 x 19Ø
 BFA12/F 438 12 x 23Ø BFA12/A 432 12 x 23Ø